<html> <head> <meta http-equiv="Content-Type" content="textml; charset=utf-8"> <title>js获取日期：前天、昨天、今天、明天、后天 ，并比较时间大小</title> </head> <body> <script language="JavaScript" type="text/javascript"> function GetDateStr(AddDayCount) { ????var dd = new Date(); ????dd.setDate(dd.getDate()+AddDayCount);//获取AddDayCount天后的日期 ????var y = dd.getFullYear(); ????var m = dd.getMonth()+1;//获取当前月份的日期 ????var d = dd.getDate(); ????return y+"-"+m+"-"+d; } ????document.write("3天前："+GetDateStr(-3)); document.write("<br />昨天："+GetDateStr(-1)); document.write("<br />今天："+GetDateStr(0)); document.write("<br />明天："+GetDateStr(1)); document.write("<br />后天："+GetDateStr(2)); document.write("<br />大后天："+GetDateStr(3)); function CompareDate(d1,d2){ ?return ((new Date(d1.replace(/-/g,"\/"))) > (new Date(d2.replace(/-/g,"\/"))));} ???alert(GetDateStr(0)+"大于"+GetDateStr(1)+"吗？"+CompareDate(GetDateStr(0),GetDateStr(1))); ???</script> </body> </html> js时间比较，获取n天后（前）的日期
原文地址：http://www.cnblogs.com/thiaoqueen/p/7472823.html